Daily Practice - 13+ Common Entrance
Common Entrance english, maths and science.
- 1Chemistry: The Periodic Table and Separating Mixtures
Explain why a pencil, not a pen, must be used to draw the baseline on chromatography paper.
- 2Chemistry: Reactions, Energy and Rates
A student dissolves ammonium nitrate in water and the temperature of the solution falls. State whether this process is exothermic or endothermic.
- 3Chemistry: Metals, the Reactivity Series and Environmental Chemistry
Explain why attaching a block of zinc to the hull of a steel ship helps to protect the ship from rusting.
- 4Physics: Forces and Energy
A trolley of mass 20 kg is pushed with a resultant force of 60 N. Use force = mass x acceleration to calculate its acceleration.
- 5Physics: Electricity, Magnetism and Waves
A wave has a frequency of 50 Hz and a wavelength of 4 m. Use wave speed = frequency x wavelength to calculate its speed.
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